Low alkalinity and high pH

[Susanj]

I often have this problem ( by low I mean 20-30 ppm) and am wondering if there’s a better way to take care of it than what I have been doing.

First  I add a lot of Spa Up/ baking soda to get the alkalinity higher and then add Spa Down , which hopefully will lower pH more than it does alkalinity. 

[waterbear]

On 3/13/2022 at 12:42 PM, Susanj said:

First  I add a lot of Spa Up/ baking soda to get the alkalinity higher and then add Spa Down , which hopefully will lower pH more than it does alkalinity. 

are you just dumping in chemicals and hoping for the best or testing your water to determine dosing. What other chemicals are you using that is causing your TA to crash (usual culprits are triclhor, dichlor, and MPS).

TA should be fairly stable unless there is a constant source of a low pH product being added regularly.

Post a full set of test results and list the chemicals you are adding and how frequently and we can take it from there.

[Susanj]

I test first of course,  but when that’s  I find low Alk and high or normal pH , that’s what I do. The water here is naturally low alkalinity ( 20 ppm) and the only one of those products we add is MPS , but not that often.

[waterbear]

4 hours ago, waterbear said:

Post a full set of test results and list the chemicals you are adding and how frequently and we can take it from there.